package com.asion.gankapp.utils;

import com.asion.gankapp.applacation.MyApp;

import java.io.File;

import okhttp3.Cache;
import okhttp3.CacheControl;
import okhttp3.Interceptor;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;

/**
 * Created by asion on 16-10-6.
 */

public class SetCacheUtils {

    //注释掉的是 有无网络都先读取缓存

    static Interceptor interceptor =(chain)->{

        Request request = chain.request();
        if (!StringsUtil.isNetworkConnected(MyApp.context)) {
            request = request.newBuilder()
                    .cacheControl(CacheControl.FORCE_CACHE)
                    .build();
        }

        Response response = chain.proceed(request);
        if (StringsUtil.isNetworkConnected(MyApp.context)) {
            int maxAge = 0 * 60; // 有网络时 设置缓存超时时间0个小时
            response.newBuilder()
                    .header("Cache-Control", "public, max-age=" + maxAge)
                    .removeHeader("Pragma")// 清除头信息，因为服务器如果不支持，会返回一些干扰信息，不清除下面无法生效
                    .build();
        } else {
            int maxStale = 60 * 60 * 24 * 28; // 无网络时，设置超时为4周
            response.newBuilder()
                    .header("Cache-Control", "public, only-if-cached, max-stale=" + maxStale)
                    .removeHeader("Pragma")
                    .build();
        }
        return response;

//        Request request = chain.request();
//        okhttp3.Response response = chain.proceed(request);
//
//        String cacheControl = request.cacheControl().toString();
//        if (TextUtils.isEmpty(cacheControl)) {
//            cacheControl = "public, max-age=60";
//        }
//        return response.newBuilder()
//                .header("Cache-Control", cacheControl)
//                .removeHeader("Pragma")
//                .build();
    };

    public static OkHttpClient setCache(){
//        File httpCacheDirectory = new File(MyApp.context.getCacheDir(), "responses");
//        //设置缓存 10M
//        Cache cache = new Cache(httpCacheDirectory, 10 * 1024 * 1024);
//        //创建OkHttpClient，并添加拦截器和缓存代码
//        OkHttpClient client = new OkHttpClient.Builder()
//                .addNetworkInterceptor(interceptor)
//                .cache(cache).build();

        File httpCacheDirectory = new File(MyApp.context.getCacheDir(), "responses");
        //设置缓存 10M
        Cache cache = new Cache(httpCacheDirectory, 10 * 1024 * 1024);
        OkHttpClient client = new OkHttpClient.Builder()
                .addInterceptor(interceptor)
                .cache(cache).build();
                return client;
    }
}
